May isa pang halaman sa paso sa tabi ng bintana.

May is an existential word here. It means there is or there are.

So May isa pang halaman... means There is another plant...

It does not mean maybe in this sentence.

In Filipino, you often do not need a separate verb like English is in this kind of sentence.

The pattern is often:

May + thing/person + location

So:

• May halaman. = There is a plant.
• May isa pang halaman sa paso. = There is another plant in the pot.

This is a very common Filipino structure.

Isa pang means one more or another.

• isa = one
• pang here helps connect the idea of one more additional

So:

• isa pang halaman = another plant / one more plant

No. In isa pang halaman, pang is not that separate pang- prefix.

Here, pang is really pa plus a linker, giving the sense of still / more / additional.

So isa pang halaman means one more plant, not a plant for something.

Halaman means plant.

It is a general word for a plant. It does not by itself tell you whether the plant is large, small, indoor, outdoor, flowering, and so on.

In this sentence, isa tells you it is one plant.

Sa is a very common marker for location or direction. Depending on context, it can mean things like:

• in
• on
• at
• to
• by

It appears twice because there are two location phrases:

• sa paso = in/on the pot
• sa tabi ng bintana = beside the window

So the sentence gives more than one piece of location information.

Literally, sa is broad enough that it can cover several English prepositions, including in, on, or at, depending on context.

But with halaman and paso, the natural English meaning is usually:

in the pot

So halaman sa paso is best understood as a plant in the pot.

Literally:

• tabi = side
• ng bintana = of the window

So sa tabi ng bintana is literally something like at the side of the window.

In natural English, that becomes:

beside the window / next to the window

Here, ng connects bintana to tabi.

• tabi ng bintana = side of the window → beside the window

So in this phrase, ng works a bit like English of, although the translation is often more natural as beside the window rather than the side of the window.

Also, this ng is different from the -ng sound inside pang.

In this sentence, it is understood as singular because of isa.

• isa = one
• therefore isa pang halaman = another plant (singular)

By itself, a Filipino noun like halaman does not always have to show singular/plural as clearly as English does. Context often tells you.

In the most natural reading, it usually describes the pot’s location:

There is another plant in the pot beside the window.

Because the sentence stacks the location phrases like this:

• sa paso
• sa tabi ng bintana

So the idea is usually a plant in the pot, and that pot is beside the window.

But like many natural sentences, context helps. If someone wanted to make the relationship clearer, they could rephrase it more explicitly.

Yes, but the original order is very natural and neutral.

Original: May isa pang halaman sa paso sa tabi ng bintana.

You can also front the location for emphasis, for example: Sa tabi ng bintana, may isa pang halaman sa paso.

That still means basically the same thing, but it puts more attention on beside the window first.